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发明授权
CN105406884B 半导体设备和无线电通信设备 有权

半导体设备和无线电通信设备
摘要：
提供了一种可以检测谐波的幅度水平的半导体设备。半导体设备10包括，检测共模模式下AC信号的共模检测器电路11，以及检测从共模检测器电路11输出的偶数阶谐波的幅度水平的检测器电路12。共模检测器电路11组合了作为在共模模式下差分信号的AC信号，由此抵消奇数阶谐波以获得直流电流和偶数阶谐波。检测器电路12从由共模检测获得的信号检测偶数阶谐波的幅度水平，并且输出检测到幅度水平。
摘要（英）：

A semiconductor apparatus that can detect the amplitude level of harmonics is provided. A semiconductor apparatus 10 includes a common mode detector circuit 11 that detects AC signals in a common mode, and a detector circuit 12 that detects the amplitude level of an even-order harmonic output from the common mode detector circuit 11. The common mode detector circuit 11 combines AC signals being differential signals in common mode, thereby cancelling out odd-order harmonics to obtain direct current and even-order harmonics. The detector circuit 12 detects the amplitude level of the even-order harmonics from a signal obtained by the common mode detection, and outputs the detected amplitude level.

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